[coreboot-gerrit] Change in coreboot[master]: mb/google/brya/var/nereid: Configure descriptor for Type-C / HDMI

[Reka Norman (Code Review)]

Attention is currently required from: Tim Wawrzynczak, Sridhar Siricilla.
Hello Sam McNally, Reka Norman, build bot (Jenkins), Kangheui Won, Tim Wawrzynczak, Angel Pons,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/63366

to look at the new patch set (#6).

Change subject: mb/google/brya/var/nereid: Configure descriptor for Type-C / HDMI
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mb/google/brya/var/nereid: Configure descriptor for Type-C / HDMI

Some bytes in the descriptor need to be set differently for Type-C and
HDMI. To allow using a single firmware variant for both cases, update
the descriptor at runtime based on fw_config. This is a temporary
workaround while we find a better solution.

The byte values were determined by changing the following CSE strap and
comparing the generated descriptors:
Type-C: TypeCPort2Config = "No Thunderbolt"
HDMI:   TypeCPort2Config = "DP Fixed Connection"

BUG=b:226848617
TEST=Type-C and HDMI both work on nereid with fw_config set correctly.

Change-Id: I2cc230e3bd35816c81989ae7e01df5d2c152062e
Signed-off-by: Reka Norman 
---
M src/mainboard/google/brya/Kconfig.name
M src/mainboard/google/brya/bootblock.c
M src/mainboard/google/brya/variants/baseboard/include/baseboard/variants.h
M src/mainboard/google/brya/variants/nereid/Makefile.inc
M src/mainboard/google/brya/variants/nereid/variant.c
5 files changed, 41 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/66/63366/6